Disclosed are a latch circuit and a flip-flop circuit, which are capable of suppressing occurrence of a single-event effect, and, in the event of a single-event transient, elimination adverse effects thereof on the circuit. The animal container 10 is constructed of a flexible housing 12 suspended by rigid panels 14 separated by struts 16. The sensor chip is bonded to a mounting surface of the support member with an adhesive. The resistance heating trace includes a trace ring for each ink supply path opening in the first and second insulating layers that forms a continuous perimeter around the corresponding ink supply path opening. Preferably, the lower pieces are substantially identical. The beam shutter may be a solid piece of aluminum or any other opaque material to block a portion of the light emitted from the LED die.